A Chicago mother makes a difficult decision after her son collapsed on a basketball court over the weekend and that mom is hoping what happens next could save lives.

Surrounded by family, Tarcia Patton hasn't left Loyola University Medical Center since her son Jermaine Cullum was rushed here last weekend after the 16-year-old collapsed while playing in a suburban basketball tournament.

While Patton came here hopeful, reality has set in. She has made the difficult decision to take Jermaine off life support.

"It was so hard, I couldn't think right, I just wanted him to get up, I just knew he wasn't going to get up," she said.

Doctors told Patton that Jermaine had lost all brain activity and he could not breathe on his own.

Jermaine collapsed after going into cardiac arrest. Patton says her son had an unexplained, rare heart condition that no one knew about until it was too late.

Two spectators at the basketball game, a nurse and a doctor performed CPR on Jermaine. Their aid helped the teenager regain a pulse, something his mother is grateful for.

"If they did not do what they did at the basketball court, I wouldn't be able to say good bye to my son," Patton said. "He would have passed away on that court."

And now Patton wants to give back by donating Jermaine's heart to Loyola for research, not only to find answers about her son, but for others.

"I made the decision because I know his condition is rare," she said. "I want to help other kids out there that might have the same rare disease he might have with his heart."

"Anytime anything happens that is inexplicable, we have to have the opportunity to pursue tissue diagnosis we learn something," said Dr. Jeffrey Winterfield, Loyola University Medical Center.

Dr. Winterfield and Patton also encourage high school athletes to get thorough physical exams from their pediatricians. Winterfield says if there are any red flags, he recommends taking the screening one step further with an electrocardiogram.

Right now, there is no nationwide mandatory screening program for high school athletes.